Research Biotica, Volume 2, Issue 2 : 80-87. Doi : 10.54083/ResBio.2.2.2020.80-87
Review Article

Published on : 29-Jun-2020

Grain Discolouration: An Emerging Threat to Rice Crop

  • B. Khamari
  • Institute of Agricultural Science, Siksha o Anusandhan (Deemed to be University), Bhubaneswar, Odisha (751 008), India


Rice crop is threatened by more than 50 diseases which may appear at any growth stage of the plants. Grain discolouration is an emerging disease of paddy, reported from different countries of the world and is gradually becoming a serious problem. Out of numerous reasons for grain discolouration, association of microbes is important one. It affects the qualitative and quantitative traits such as germination ability, seed health, seed quality, seed morphology and ultimately it results into yield penalty. It is a complex disease exhibiting various symptoms depending on season, locality, variety and pathogens involved. To mitigate this serious malady, precise identification of pathogen is necessary. An integrated management strategy involving better utilization of genetic resources, use of improved agricultural practices,  seed treatment with chemicals or biological agents are need to be under taken to manage this malady.


Grain discolouration, Integrated management, Rice diseases, Seed borne disease

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